Ronstan Series 40 All Purpose Block - Single - Stand Up Boat i420 Typically used in direct 4:1

Typically used in direct 4:1 purchase systems such as mainsheets and boom vangs

Polars are just a software update away

AIS / AIS SART target display: MMSI

You can even ditch your phone and utilize your ACR OLAS Tag with the OLAS GUARDIAN Engine Kill Switch or OLAS Core Base Station as part of a more permanent solution

and any other application needing a reliable Crew Overboard Marker (COB) light

Ronstan Series 40 All Purpose Block - Single - Stand Up Boat i420 Typically used in direct 4:1Series 40 All Purpose Block Single Stand Up All purpose (AP) blocks are a great all around solution. Self lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Captive Lock universal head can be fixed in either of two